Roughly 225 hours of game play (across various characters) and the only problems I've encountered was my game crashing when I try to enter the original Dark Brotherhood location after having finished the quest line, and 2 other times where after playing for 10+ consecutive hours my game has froze. So honestly I don't think the game is perfectly fine.
I really hope that is the setting of the next game as well!! I think its too early for them to be announcing the next game so this has to be a Skyrim dlc.
Roughly 225 hours of game play (across various characters) and the only problems I've encountered was my game crashing when I try to enter the original Dark Brotherhood location after having finished the quest line, and 2 other times where after playing for 10+ consecutive hours my game has froze. So honestly I don't think the game is perfectly fine.